I have many times, it’s a very bizarre experience.
You fall asleep with a second, and it feels like literally a min later they wake you up!
The surgery may have been hours but it feels like a min to you.
Sometimes I have seen things whilst under, other times it’s just blank - nothing.
They always wake you up in theatre to make sure you’re ok, but you don’t remember at all.
Then they wake you in recovery.